• SECURE
  • ACCURATE
  • CLEAN
  • HUMAN

How to prevent code injection in math tasks with your AI

Connect this MCP to your agent to replace dangerous eval() calls with a secure parser. Your AI will handle math strings without risking system commands.

Ask AI about this page

Short answer

How do I stop code injection when my AI does math?

Instead of letting your agent use eval(), use the evaluate_math tool to process math strings through a restricted parser. This ensures the input is treated as math and not as executable code. You get the correct results without the security risk.

The results you get.

Secure math execution outcomes.

This is what happens when your agent processes math strings.

SECURE

No malicious code

The parser ignores system commands and non-math characters. Your environment stays safe from injection attacks.

ACCURATE

Correct math results

The agent gets deterministic numerical answers. It avoids the logic errors often found in raw LLM calculations.

CLEAN

Sanitized output

The tool strips away everything except the mathematical result. You receive a clean value ready for your next step.

HUMAN

Manual oversight

The AI provides the calculation, but you decide how to use that number in your broader workflow.

The workflow

What your AI does when a math string arrives.

The agent moves from a raw string to a safe, calculated value.

  1. Receive input

    Your agent identifies the math string provided in your prompt or data source.

    evaluate_math

  2. Parse expression

    The agent uses the tool to strip out any non-mathematical or dangerous commands.

    evaluate_math

  3. Run calculation

    The parser executes the math logic in a restricted environment to find the answer.

    evaluate_math

  4. Deliver value

    The agent gets the final number and presents it back to you.

    evaluate_math

Try it

Copy these to start.

Paste these into your chat to test the parser.

Starting points

Replace the math inside the brackets with the specific expressions you need to solve.

Deterministic Math Expression Evaluator Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_AgwU5vOr68LRTTxf1lGQM9MsmS2e8aYldzAcaQHV/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Deterministic Math Expression Evaluator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "deterministic-math-expression-evaluator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_AgwU5vOr68LRTTxf1lGQM9MsmS2e8aYldzAcaQHV/mcp"
    }
  }
}
Copy into chat04

  • Evaluate this math expression safely: [125 * 4 / 5]

  • Solve this formula from my spreadsheet: [sqrt(144) + 25]

  • Run this math string from my repo: [sin(pi/4) * 10]

  • Calculate this value for my client: [log(100) + 7]

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect Deterministic Math Expression Evaluator once, then ask.

Connect this MCP to your client in one click. Your credentials stay encrypted, and you can start running math tasks immediately.

Connect Deterministic Math Expression Evaluator to your AI

FAQ

How this task behaves.

  • 01

    Can the AI run system commands like 'rm -rf'?

    No. The parser only recognizes mathematical syntax and ignores all other commands.

  • 02

    Does this tool modify my files?

    No. It only reads the string you provide and returns a number.

  • 03

    Can it handle complex trigonometry?

    Yes, the parser supports standard trigonometric and logarithmic functions.

  • 04

    Will the AI use eval() if it thinks it's easier?

    No. This MCP provides the specific tool for the agent to use instead of eval().

  • 05

    Can the AI write new math code to the disk?

    No. The tool is for evaluation only and cannot write or save files.

  • More questions about Deterministic Math Expression Evaluator? The Connector page answers them. See everything the Deterministic Math Expression Evaluator Connector can do

Connect Deterministic Math Expression Evaluator to Claude, Cursor, ChatGPT & more